Answer:
5.3 m/s
Explanation:
First, find the time it takes for him to fall 7m.
y = y₀ + v₀ t + ½ at²
0 = 7 + (0) t + ½ (-9.8) t²
0 = 7 − 4.9 t²
t ≈ 1.20 s
Now find the velocity he needs to travel 6.3m in that time.
x = x₀ + v₀ t + ½ at²
6.3 = 0 + v₀ (1.20) + ½ (0) (1.20)²
v₀ ≈ 5.27 m/s
Rounded to two significant figures, the man must run with a speed of 5.3 m/s.
one car moving in a straight line covers one third distance in 20km/h and rest in 60km/h . find the average speed
Answer:
36 km/h
Explanation:
If d is the total distance, then the time spent driving at 20 km/h is:
t₁ = (d/3) / 20
t₁ = d / 60
And the time spent driving at 60 km/h is:
t₂ = (2d/3) / 60
t₂ = d / 90
So the total time is:
t = t₁ + t₂
t = d/60 + d/90
t = d/36
The average speed is the total distance divided by total time:
s = d / t
s = d / (d/36)
s = 36
The average speed is 36 km/h.
2. Calculate the average magnitude of the force of gravity on the planet Neptune (mass of 1.02*10^ 26 kg) due to the Sun (mass of 1.99*10^ 30 kg) , assuming an average orbital distance of 4.50*10^ 12 m.
Answer:
The answer to your question is: F = 6.69 x 10²⁰ N
Explanation:
To solve this problem we need to use the Newton's law of universal gravitation.
F = G(m1m2)/r²
where
F = ?
G = 6.674×10−11 N · (m/kg)2 is the gravitational constant
m1 = Neptune mass = 1.02 x 10²⁶ kg
m2 = Sun mass = 1.99 x 10³⁰ kg
r orbital distance among the planets = 4.50 x 10¹² m
Substitution
F = 6.674×10−11 N · (m/kg) x 1.02 x 10²⁶ kg x 1.99 x 10³⁰ kg / (4.50 x 10¹² m)²
F = 1.355 x 10⁴⁶ / 2.025 x 10²⁵
F = 6.69 x 10²⁰ N
The average magnitude of the force of gravity on Neptune due to the Sun is approximately [tex]\( 6.714 \times 10^{20} \, \text{Newtons} \).[/tex]
The average magnitude of the force of gravity F on the planet Neptune due to the Sun can be calculated using Newton's law of universal gravitation, which states that the force between two masses is proportional to the product of their masses and inversely proportional to the square of the distance between their centers. The formula is given by:
[tex]\[ F = G \frac{m_1 m_2}{r^2} \][/tex]
Plugging in the values, we get:
[tex]\[ F = (6.674 \times 10^{-11} \, \text{Nm}^2/\text{kg}^2) \frac{(1.99 \times 10^{30} \, \text{kg}) (1.02 \times 10^{26} \, \text{kg})}{(4.50 \times 10^{12} \, \text{m})^2} \] \[ F = (6.674 \times 10^{-11} \, \text{Nm}^2/\text{kg}^2) \frac{2.03 \times 10^{56} \, \text{kg}^2}{2.025 \times 10^{25} \, \text{m}^2} \] \[ F = 6.697 \times 10^{-11} \times 1.003 \times 10^{31} \, \text{N} \]\\ \[ F \approx 6.714 \times 10^{20} \, \text{N} \][/tex]
Questions
1.1 A rectangular block of wood has dimensions
240 mm x 20.5 cm x 0.040 m. Calculate its
volume in cm
Answer:
1968
Explanation:
2400*20.5*0.004
Which of the following statements has NOT been indicated by research on food and hunger behaviors?
A) Forcing children to eat specific foods often has a negative effect on food preference.
B) People usually consume larger amounts of food in social settings.
C) Stress may cause people to decrease their craving for carbohydrates.
D) Children are more likely to eat certain foods after seeing a parent eat them
The statements have not been indicated by research on food and hunger behaviors is stress may cause people to decrease their craving for carbohydrates. Therefore, option C is correct.
What are carbohydrates ?Carbohydrates are organic compounds that provide energy to living cells. They are carbon, hydrogen, and oxygen compounds with a hydrogen-to-oxygen ratio of two. Carbohydrates, which we consume, are derived from plant photosynthesis.
They are composed of carbon, hydrogen, and oxygen and are primarily used for energy by living things. Sugars are simple carbohydrates, such as glucose, that living situations' cells use for energy.
The statements have not been indicated by research on food and hunger behaviors is stress may cause people to decrease their craving for carbohydrates.
Thus, option C is correct.
To learn more about the carbohydrates, follow the link;
https://brainly.com/question/14614055
#SPJ5
The correct answer is C) Stress may cause people to decrease their craving for carbohydrates, as research shows stress often increases cravings for comfort foods high in sugar and fat.
Research on food and hunger behaviors has indicated several facts about how we eat and what influences our eating habits. Let's examine each statement one by one:
A) Forcing children to eat specific foods often has a negative effect on food preference: This is supported by research showing that pressuring children to eat specific foods can lead to aversions rather than preferences.B) People usually consume larger amounts of food in social settings: Studies indicate that social settings encourage increased food consumption due to various social cues and norms.C) Stress may cause people to decrease their craving for carbohydrates: This statement is NOT supported by research. In fact, research indicates that stress often leads to increased cravings for carbohydrates, as people tend to seek comfort foods that are high in sugar and fat to alleviate stress.D) Children are more likely to eat certain foods after seeing a parent eat them: Observational learning plays a significant role in children's eating behaviors, so this statement is consistent with research findings.Therefore, the correct answer is C) Stress may cause people to decrease their craving for carbohydrates.
Why do you float in space
Answer:
because you don't got gravity in space that's why you float in space
Astronauts float in space due to being in a state of free-fall, experiencing weightlessness as a result.
Weightlessness in space occurs because astronauts and their spacecraft are in a state of free-fall, falling towards Earth without resistance. This creates the sensation of weightlessness as everything inside the spacecraft falls at the same rate, hence objects float. Weightlessness in space, often referred to as microgravity or zero gravity, occurs due to the conditions experienced by astronauts and objects in orbit around the Earth or other celestial bodies. Here's a more detailed explanation:
Free-Fall: Objects in orbit around a planet are essentially in a continuous state of free-fall towards that planet. This is because they are moving forward at a sufficient velocity to balance the force of gravity pulling them towards the planet's center. As a result, they are constantly falling towards the planet but are also moving tangentially at a high speed, causing them to continuously miss the planet.
A car is traveling at an average speed of 70
m/s. How many km would the car travel in
6.5 hrs?
A car is traveling at an average speed of 70 m/s, the car would travel approximately 1638 kilometers in 6.5 hours at an average speed of 70 m/s.
To calculate the distance traveled by the car, we can use the formula:
[tex]\[ \text{Distance} = \text{Speed} \times \text{Time} \][/tex]
Given:
Average speed of the car: [tex]\(70 \, \text{m/s}\)[/tex]
Time: [tex]\(6.5 \, \text{hrs}\)[/tex]
First, let's convert the time from hours to seconds, as the speed is given in meters per second:
[tex]\[ \text{Time in seconds} = \text{Time in hours} \times 3600 \, \text{s/hr} \][/tex]
[tex]\[ \text{Time in seconds} = 6.5 \times 3600 \, \text{s} \][/tex]
Now we can use the formula to calculate the distance traveled:
[tex]\[ \text{Distance} = 70 \times \text{Time in seconds} \][/tex]
Finally, let's convert the distance from meters to kilometers:
[tex]\[ \text{Distance in kilometers} = \frac{\text{Distance in meters}}{1000} \][/tex]
Substitute the calculated values:
[tex]\[ \text{Distance in kilometers} = \frac{70 \times 6.5 \times 3600}{1000} \][/tex]
[tex]\[ \text{Distance in kilometers} \approx 1638 \, \text{km} \][/tex]
Thus, the car would travel approximately 1638 kilometers in 6.5 hours at an average speed of 70 m/s.
For more details regarding speed, visit:
https://brainly.com/question/6280317
#SPJ3
A bullet fired straight through a board 0.10 m thick strikes the board with a speed of 480 m/s and emerges with a speed of 310 m .
Part A
What is the x component of the average acceleration of the bullet while in the board? The positive x direction is the initial direction of motion of the bullet.
Express your answer with the appropriate units.
Answer:
Explanation:
givens
vf = 310 m/s
vi = 480 m/s
d = 0.1 m
formula
vf^2 = vi^2 + 2*a*d
Solution
310^2 (m/s)^2 = 480^2 (m/s)^2 + 2 * a * 0.1 meters
96100 = 230400 + 2*a * 0.1
96100 - 230400 = 2*a*0.1
-134300 = 2*0.1*a
-134300 = 0.2 *a
-134300/0.2 = a
a = -671500 m/s^2
The important thing to notice is that the acceleration is minus which means the bullet is slowing down.
Two 6.0 kg masses are separated by a distance of 4.0 m. What is the magnitude of the gravitational force between the two masses?
Answer: [tex]1.50075*10^{-10}\ N[/tex]
Explanation:
For this exercise we need to use the Gravitational Force Formula. This is:
[tex]F_g=G(\frac{m_1*m_2}{r^2})[/tex]
Where [tex]F_g[/tex] is the gravitational force between two objects, [tex]G[/tex] is the gravitational constant ([tex]G=6.67*10^{-11}\ \frac{Nm^2}{kg^2}[/tex]) and [tex]r[/tex] is the distance between the objects.
We know that:
[tex]m_1=6.0\ kg\\\\m_2=6.0\ kg\\\\r=4.0\ m[/tex]
Therefore, in order to calculate the magnitude of the gravitational force between the two masses, we must substitute these values into the formula.
Then we get:
[tex]F_g=(G=6.67*10^{-11}\ \frac{Nm^2}{kg^2})(\frac{(6.0\ kg)(6.0\ kg)}{(4.0\ m)^2})\\\\F_g=1.50075*10^{-10}\ N[/tex]
Which of the following best describes gravitational force?
An attraction between two objects that have mass
An attraction between two objects due to their electrons
The force that keeps atoms and molecules bound together
The force that keeps objects from moving when they are at rest
Answer:
2
Explanation:
Answer:
A. An attraction between two objects that have mass
Explanation:
i looked it up lol
what would happen when an inflated balloon is place in an ice bath and the atmosphere pressure has not changed?
The inflated balloon shrinks when it is placed in an ice bath with no change in atmospheric pressure.
Explanation:
When the inflated balloon is subjected to an ice bath, it shrinks. This is due to the fact that smaller volume gets occupied by the air/gas inside the balloon as the temperature decreases. Hence, causes the balloon walls to collapse.
An ice bath also lowers the overall air temperature of the balloon inside. As the temperature decreases, the air molecules move more slowly and with lower energy. Because of the particle's lower energy, their collisions with the walls are not enough to keep the inflated balloon.
Ann is driving down a street at 64 km/h.
Suddenly a child runs into the street.
If it takes Ann 0.761 s to react and apply
the brakes, how far will she have moved before
she begins to slow down?
Answer in units of m.
Answer:
13.5 m
Explanation:
First, convert km/h to m/s:
64 km/h × (1000 m / km) × (1 h / 3600 s) = 17.8 m/s
Distance = rate × time
d = 17.8 m/s × 0.761 s
d = 13.5 m
Answer:
13.5 m
Explanation:
64 km * 1000 m/km
-----------------------
1 hr * 3600 s/hr
= 17.8 m/s
d = vt
= (17.8 m/s)(0.761 s)
= 13.5 m
(HELP ME PLEASE ;-;) The National Academy of Sciences reported that the Earth's surface temperature has risen by about 1 degree Fahrenheit in the past century. This is an example of a change in Earth's
Climate or Weather?
Answer:
Climate
Explanation:
I am pretty sure this is climate because climate is what the temperature over time while weather is what the temperature is today. For example, it may we windy today. That is an example of weather. It is hot in Arizona and Cold in Idaho. This is an example of climate.
Final answer:
The increase of the Earth's surface temperature by about 1 degree Fahrenheit over the past century is an example of a change in Earth's climate, which is a long-term trend, as opposed to weather which is short-term. This change is indicative of global warming and has profound effects on the environment and living organisms.
Explanation:
The National Academy of Sciences report stating that the Earth's surface temperature has risen by about 1 degree Fahrenheit in the past century is an example of a change in Earth's climate. This rise in temperature represents a long-term trend that affects ecosystems, weather patterns, and geological processes on a global scale. In contrast, weather refers to short-term atmospheric conditions. The concept of global warming is closely related to this change, as it describes the increase in Earth's average surface temperature due to activities such as burning fossil fuels which release gases that warm the planet. Notably, the increase in global temperatures has implications for habitats, species survival, and agricultural practices. Regional variations in climate change are expected, with some areas, like the Arctic, experiencing more rapid warming.
A cup of hot water cannot melt a large block of ice. However, the same block melts when dropped into a lake. This is because
1. Answer true or false to the following:
A ball rolling on a flat table has a horizontal but no vertical
component of motion.
A rock falling straight downward with no wind blowing has no
horizontal component of motion.
A baseball hit into the air toward right field has vertical but no
horizontal component of motion.
A basketball bounced straight up and down has vertical but no
horizontal component of motion.
Ball -- true
Rock -- true
Baseball -- False
Basketball -- true
All the statements are true except the third statement related to baseball hit into the air toward right field has vertical but no horizontal component of motion.
True- A ball rolling on a flat table has a horizontal but no vertical component of motion.
True- A rock falling straight downward with no wind blowing has no horizontal component of motion.
False- A baseball hit into the air toward right field has vertical but no horizontal component of motion.
True- A basketball bounced straight up and down has vertical but no horizontal component of motion.
Answer: Option true 1, 2, 4, and false 3
Explanation:
For the first statement of ball rolling on a flat table, as the table was flat, the acceleration due to gravity may not be acting on the ball kept on the table. When external push is given on the ball kept on the flat table, the ball will be moving along the direction of the push and not perpendicular to the direction of push.
So, the statement 1 is true. Similarly, the motion of rock as well as basketball in a straight up and down direction exhibit only the vertical component as both of them will be moving due to acceleration due to gravity.
So, the second and last statement is also true. But in case of baseball hitting the air toward right field means the ball is made to hit at a particular angle. So as the baseball will follow a path of parabola it will have only horizontal component of motion and not vertical component of motion. So the third statement is false.
Give one advantage and one disadvantage of physical models
Answer:
Advantage of physical model :
Easily understandable. Finding circumstances and end results utilizing model discernibly. Improving framework understanding through a visual examination. Finding mistakes prior and lessening framework surrenders.Disadvantage of physical model :
Time consuming to make. It takes more time to make any physical model. We should be revamped whenever decimated.What is the importance of vectors quantities and how they help engineers, pilots, navigators and geographer
Answer:
Scalar and vector quantities are used by the mathematicians, geographers and engineers to relate and represent the physical variables in terms of magnitude and direction. The quantity which has both magnitude and direction is called as vectors. Scientists in space station also use them for navigation or when they are launching or exploding a material to define its direction which makes easier for them to navigate. There are many types pf vectors depending upon its property they are used in various applications.
Which factors are used to calculate the kinetic energy of an object? Check all that apply. gravity velocity volume mass height
Quantities that determine the kinetic energy of a body are its mass and velocity
Answer: mass and velocity
Explanation:
The kinetic energy of a body is the energy possessed by an object by virtue of its motion. It is given by the equation
[tex]k= \frac{1}{2}mv^2[/tex]
Where m represents mass of the body and v represents its velocity.
Two bodies of equal velocity but different mass the heavier body will have greater kinetic energy. When an object is at rest its velocity is equal to zero. Thus its kinetic energy will be zero. Hence it can be concluded that only moving bodies have kinetic energy.
Stationary objects placed at a height possess potential energy which is the energy by virtue of their position or configuration. The total mechanical energy of a system is the sum of potential and kinetic energy.
at what tempreature farenhite scale and celcius scale show the same reading
Answer:
-40°F = -40°C
Explanation:
To convert Celsius to Fahrenheit, the following equation is used:
F = 1.8C + 32
When the temperature on the Fahrenheit scale is the same on the Celsius scale, that means F = C. Substituting:
C = 1.8C + 32
0 = 0.8C + 32
-0.8C = 32
C = -40
Therefore -40°F = -40°C.
Answer:-40°F = -40°C
Explanation:
!!!!!!!!!!!PLEASE HELP!!!!!!!!!!!
Answer: im too young to know
Explanation:
An element with 5 protons 6 neutrons and 8 electron has an mass number of
Answer: The mass is eleven with a negative 3 charge
Explanation:
Add the protons and neutrons. This makes 11. In a stable molecule, the protons and electrons would have the same number, but this is not a stable molecule, so subtract the number of protons from the number of electrons. this makes your negative charge. Electrons are not counted when calculating molecular mass.
An element with 5 protons, 6 neutrons and 8 electrons has a mass number of 11. The mass number is the sum of the protons and neutrons in an atom's nucleus.
Explanation:The concept of the mass number in the realm of atomic structure is indeed a fundamental one, as it serves as a vital identifier for each element. The mass number of an element is the result of adding up the number of protons, which defines the element's identity, and the neutrons, found within the atomic nucleus. This addition yields the overall mass of the atom.
In response to your query, an element characterized by 5 protons and 6 neutrons indeed boasts a mass number of 11. The rationale behind this calculation is rooted in the minute mass of electrons relative to protons and neutrons. Electrons, which orbit the atomic nucleus, make a negligible contribution to the overall mass of the atom. As a result, when determining the mass number, they are rightfully omitted from the equation, and the sum of protons and neutrons stands as the decisive factor.
This core concept of mass number elucidates the distinction between various isotopes of an element, where the number of neutrons may vary, while the number of protons remains constant. It plays a pivotal role in our understanding of atomic structure and the organization of the periodic table, guiding the systematic classification of elements based on their mass characteristics.
Learn more about Mass Number here:https://brainly.com/question/18803094
#SPJ3
6. What is the acceleration of an object that accelerated steadily from rest, traveling 10 m in 10 s?
Answer:
0.2 m/s²
Explanation:
Given:
x₀ = 0 m
x = 10 m
v₀ = 0 m/s
t = 10 s
Find: a
x = x₀ + v₀ t + ½ at²
10 m = 0 m + (0 m/s) (10 s) + ½ a (10 s)²
a = 0.2 m/s²
What force would be needed to make a 10kg bowling ball accelerate down the alleyway with an acceleration of 3m/s2
Answer:
30 N
Explanation:
From Newton's second law:
F = ma
F = (10 kg) (3 m/s²)
F = 30 N
Answer:
F = 30 N
Explanation:
F = (10 kg) (3 m/s²)
F= ma
m= 10 kg
a= 3 m/s^2
Why did Aristotle’s theory of everything falling to its “natural place” last more than 1,000 years even though it was incorrect?
No one else pointed out the inconsistencies in the theory.
He had patented the idea and held a copyright on this theory.
The idea of the Sun as the center of the solar system was not yet established.
His framework of thought was very robust, despite the strangeness of his conclusion.
Aristotle's theory of everything falling to its 'natural place' lasted more than 1,000 years for various reasons, including limited scientific knowledge and the robustness of his framework of thought.
Aristotle's theory of everything falling to its 'natural place' lasted more than 1,000 years even though it was incorrect for several reasons. One reason is that no one else pointed out the inconsistencies in the theory, as scientific methods and knowledge were limited during that time. Additionally, the idea of the Sun as the center of the solar system was not yet established, so alternative explanations were scarce. Finally, despite the strangeness of his conclusion, Aristotle's framework of thought was very robust, which may have contributed to the longevity of his theory.
Learn more about Aristotle's theory of everything falling to its 'natural place' here:https://brainly.com/question/4692646
#SPJ2
Two factors effecting the magnitude of the force of gravity between 2 objects are...
Answer:
Two factors effecting the magnitude of the force of gravity between 2 objects are the product of their masses and square of distance between them.
Explanation:
According to Newton's law of universal gravitation
[tex]F = G\frac{m_{1}m_{2} }{r^{2} } }[/tex]
where F is the gravitational force, G is the universal gravitational constant and its value is 6.6743 × 10⁻¹¹ Nm²/kg₂ , m₁ and m₂ are masses of bodies and r is the distance between them.
It can be seen from the above equation that F is directly proportional to the product of the masses and inversely proportional to the square of distance between them.
F ∝ m₁m₂
F ∝ 1/r²
As far as the masses of the bodies increase, magnitude of the Gravitational force increases and if distance between them increase then Gravitational force between them decreases.
The magnitude of the force of gravity between two objects is affected by the product of their masses and inversely by the square of the distance between them, in accordance with Newton's Universal Law of Gravitation.
Explanation:Two factors that affect the magnitude of the gravitational force between two objects are: the product of their masses (M1 and M2) and the square of the distance (R²) between their centers.
According to Newton's Universal Law of Gravitation, the force of gravity (Fgravity) is directly proportional to the product of the two masses and inversely proportional to the square of the distance between them.
This is mathematically represented as Fgravity = G * (M1 * M2) / R², where G is the constant of proportionality, known as the gravitational constant.
The mass of an object contributes to its gravitational pull; the more mass an object has, the greater its gravitational force. Similarly, distance plays a crucial role; as the distance between objects increases, the force of gravity decreases exponentially.
For example, if the distance between two objects is doubled, the gravitational force between them becomes one fourth of what it was at the initial distance.
Learn more about Gravitational Force here:https://brainly.com/question/29190673
#SPJ2
Stephanie is riding her bicycle to the park. The chemical energy used to pedal the bicycle is transformed into __________.
Answer:
MECHANICAL ENERGYExplanation:
when you use mechanical energy you are use kinetic energy and potential energy at the same time.
When pedaling the bike is transforming chemical energy, supplied by the breakdown of the food you eat, into mechanical energy to turn the pedals. The chemical energy is potential and the mechanical energy is kinetic
Dalton’s completing an investigation in the science lab. He observes that a sample of liquid turns to gas at 135°C. What’s this temperature called? A. boiling point B. freezing point C. melting point D. room temperature E. standard temperature
The temperature at which the sample of liquid turns to gas at 135 °C is termed as boiling point.
Answer: Option A
Explanation:
The observation of conversion of liquid to gas indicates that there is occurrence of change in the state of matter. The inter-conversion from one state to another can be done by either varying the temperature or by varying the pressure.
In this case, the liquid on heating gets converted to gaseous state after attaining a particular temperature say 135 °C. So, this process of conversion from liquid to gaseous state on heating is termed as boiling.
The temperature at which a liquid converts to gas is termed as the boiling point of that liquid.
Answer:
option a
Explanation:
How long does it take a car to go 1000 m if it is going at 50 m/sec?
The car would take 20 seconds to go 1000 meters. This can be found by dividing 1000 by 50.
If you need more help, comment below and I will be happy to assist.
A ball falls from a height of 25 cm what is the same distance described in meters? Someone help ASAP THIS IS DO TONIGHT
.25 meters
divide the value by 100 to get your answer.
Answer:
Explanation:
im pretty sure its 0.25 because your dividing the 25 cm by 100
Which type of force will an object move towards?
A) weakest
B) strongest
C) net
D) balanced
Answer:
i think it's weakest
EDIT: It's net. I answered weakest but it was wrong and the correct answer was net. oops
Explanation:
if a strong force is acting on something it will push it away, meaning the object would go towards the weaker force
An object will move towards the strongest force acting on it. Option B is correct.
In physics, the net force on an object determines its motion. The net force is the vector sum of all the individual forces acting on the object. When there is a stronger force in a particular direction compared to the other forces, the object will accelerate in that direction.
Newton's second law of motion states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. Mathematically, this can be expressed as
F=ma, where
F is the net force,
m is the mass of the object, and
a is the acceleration.
When multiple forces act on an object, they can either be in the same direction, adding up to create a stronger net force and causing acceleration, or they can be in opposite directions, balancing each other out and resulting in no net force and no acceleration (balanced forces).
In summary, an object will move towards the direction of the strongest force acting on it because that force will result in the greatest acceleration, according to Newton's second law of motion.
To learn more about force, here
https://brainly.com/question/13191643
#SPJ3
In terms of saturation (unsaturated, saturated, super-saturated). How would you classify the following?
1. A NaCl solution with a concentration of 50g/100mL of water at 40°C
2. A sugar solution with a concentration of 200g/100mL of water at 40°C
3. A sugar solution with a concentration of 240g/100mL of water at 40°C
Answer:
1. A NaCl solution with a concentration of 50g/100mL of water at 40°C: The NaCl solution with a given concentration is saturated at this temperature .As the temperature increases the solution will more dissolves.
2. A sugar solution with a concentration of 200g/100mL of water at 40°C: The sugar solution with a given concentration is saturated at this temperature. As the temperature increases the solution will more dissolves.
3. A sugar solution with a concentration of 240g/100mL of water at 40°C: The sugar solution with a given concentration is saturated at given temperature.
Final answer:
The NaCl solution is unsaturated, the sugar solution is saturated, and the other sugar solution is supersaturated.
Explanation:
In terms of saturation, a solution can be classified as either unsaturated, saturated, or supersaturated.
The NaCl solution with a concentration of 50g/100 of water at 40°C is unsaturated because it contains less than the maximum amount of solute that can dissolve in the given amount of solvent.The sugar solution with a concentration of 200g/100 of water at 40°C is saturated because it contains the maximum amount of solute that can dissolve in the given amount of solvent.The sugar solution with a concentration of 240g/100 of water at 40°C is supersaturated because it contains more solute than can normally dissolve in the given amount of solvent at that temperature.